钢筋混凝土房屋混凝土质量检测抽样方案选择_赵鸣

23120072StructuralEngineersVo.l23,No.1Feb.2007:2005-11-09赵鸣1冯海华1赵鸿2(1.,200092;2.,200031)现行检测规范所采用的百分比抽样方法缺乏理论依据,而采用国家抽样检验标准能保证被检测结构的结果可靠,又可显著节约检验工作量和检验费用,因此应在建筑工程建设中逐步使用文章研究分析了百分比抽样的不合理性,并对适合钢筋混凝土房屋混凝土质量检测的计数抽样检验方案进行了对比分析,建议采用二次抽样和序贯式抽样抽样方案,OC曲线,混凝土房屋SamplingMethodofConcreteQualityInspectionforReinforcedConcreteBuildingsZHAOMing1FENGHaihua1ZHAOHong2(1.DepartmentofBuildingEngineering,TongjiUniversity,Shanghai200092,China;2.)AbstractAccordingtothepresentspecifications,percentagesamplingmethodshouldbeusedwhenusingNDEmethodforevaluationofconcreteconstructionquality.TheNationalSamplingInspectionStandardscouldnotonlyguaranteethereliabilityoftheinspectionresults,butalsosavetheinspectioncos.tItisproposedthatthesestandardsneedtobeusedinbuildingengineeringconstructions.Thedisadvantagesofthepercentagesamplingarepointedou,tthesuitablesamplingmethodsarediscussedfortheconcretequalitycontrolofrein-forcedconcretebuildings.Itisproposedtoadoptthetwicesamplingmethodandtheconsequentialsamplingmethodintheconcretequalityinspectionforreinforcedconcreteconstructions.Keywordssamplingmethod,OCcurve,reinforcedconcretebuilding1,GB50204-2002,30%,,,,,,,,,,,2OC,,;,,,()(),,,,,,,,;,,,,OC(Oper-atingCharacteristicCurve),L(p)pdn,c,/d[c0,L(p)OC,,OCp[p0,Pa(p)=1;p\p0,Pa(p)=0,,,p0,;,,1OC100%,,100%1OC3GB50204-2002,10%,3:,80%,,501003005007001000(N;n,c),L(p),L(p)=6cd=0CdDCn-dN-DCnN,,N,n,c(c),dn,p,D=Np,1,OC21Np0(n,c)051015202530354050(5,1)10.97650.92820.82410.74190.6110.52390.40050.3259100(10,2)10.99340.940.82950.68120.52170.37290.24850.1538300(30,6)10.99980.98070.85880.60900.33770.14620.04950.0131500(50,10)110.99390.89180.58510.24970.06830.01210700(70,14)110.9980.91710.57220.19270.03380.003201000(100,20)110.99960.94370.56060.13580.0124002,,,25%,(50;5,1)61.1%,(1000;100,20)13.58%,,,,,,,,#46#StructuralEngineersVo.l23,No.1StructuralAnalysis,2OC4,23,,;;;;,4.1,,,,,,4.2,,,;,,,,,,,,;,,,,,,,,,4.3,OC,,,,,,,,,,,5,()GB/T13262-91GB/T13264-91GB/T15239-94GB/T8051-2002OC,5.1OC#47###231GB/T13262-91,,,GB/T13264-91,,p0,,,,p0p0,,A,A=1-Pa(p0);,,p1,,,B,B=Pa(p1)AB:A=5%;B=5%,B=10%A=1-Pa(p0)B=Pa(p1)(p0p1AB)n()c()AB,p0p1,,p0,p1,p0p1,;,,p0p1p0p1,p0=5%,p1=20%,(250)(41,4),1025050,100,300,500,7001000,p0=5%,p1=20%,A=0.05,B=0.10L(p)(2),OC(3)250,;250,2GB/T13264-91GB/T13262-91Np0(n,c)051015202530354050(20,2)10.94180.6900.29690.13900.03450.01150.00170100(25,2)10.90190.52170.21420.06840.01760.003700300(41,4)10.96050.60870.22380.05330.00890.001100500(41,4)10.95510.60850.23200.05860.01050.001400700(41,4)10.95290.60850.23530.06080.01130.0015001000(41,4)10.95120.60850.23780.06250.01180.0017003GB/T13264-91GB/T13262-91OCOC,OC,,A,B5.2OC501003005007001000,LQ=20%(LQ,)L(p)(3),OC(4):#48#StructuralEngineersVo.l23,No.1StructuralAnalysis3GB/T15239-94Np0(n,c)051015202530354050(10,0)10.50410.31060.14320.08250.03390.01790.00630.0029100(13,0)10.49080.23110.10390.04330.01780.00670.00230300(20,1)10.73660.38290.16590.06280.0210.00620.00160500(20,1)10.73630.38650.16980.06530.03740.00680.00310700(32,3)10.93080.59980.26590.08800.02280.0047001000(32,3)10.92940.59990.26780.08950.02350.0049004GB/T15239-94OCOC,,20%10%;,,A5.3OC,,,,:,n1,(A,B)n1C1n1C2n1(C1n1C2n1)n1D\C2n1,;D[C1n1,;C1n1DC2n1,,n2-n1(n2n1+1)C1n2C2n2,(C1n2C2n2),n2D\C2n2;D[C1n2,;C1n2DC2n2,,,,,,,,,,,,,,OC,K,p=1-[(1-pR)/(r-pA)]K(pR/pA)K-[(1-pR)/(1-pA)]K,Pa=[(1-B)/A]K-1[(1-B)/A]K-[B/(1-A)]K,,pA,pRpA=5%,pA=20%,A=0.05,B=0.10,OC55OC,OCpA,pR,A,B,A,B,pApR,#49###231,,hA=lg[(1-A)/B]lg{[pR(1-pA)]/[pA(1-pR)]},hR=lg[(1-B)/A]lg{[pR(1-pA)]/[pA(1-pR)]},g=lg[(1-pA)/(1-pR)]lg{[pR(1-pA)]/[pA(1-pR)]},nt=2hAhRg(1-g),pA=5%,pR=20%,A=0.05,B=0.10,hA=1.445,hR=1.855,g=0.1103,nt=55,ntncum,AA=gncum-hA,RR=gncum+hR;At,At=gnt,Rt=At+1,,At=6,Rt=7,6,,;,;,65.4,,A196,GB/T13264-91,p0=5%,p1=20%(25,2),13;0,313;2,3GB/T15239-94,A(),LQ()=20%,(20;1,2),13;0,213;1,244GB/T13264-91232GB/T13264-91133GB/T15239-94192GB/T15239-94132GB/T8051-2002132,,6,,,,GB/T13262-91GB/T13264-91GB/T8051-2002,,,[1].[M].:,1986;6.[2],.[M].:,1986;6.(下转第71页)#50#StructuralEngineersVo.l23,No.1StructuralAnalysis(3)23%~38%,22(4)510,4%~20%(5)0.2mm0.3mm0.4mm65b,,(6)20%~36%,;78%~82%;1.3~1.5;,1/3.5~1/2.5(7),,(8),,,,[1],,,.-[J].,2004;(3).[2],,.-[J].,2001;(2).[3],.[J].,2004;(4).(上接第50页)[3]1997[S].:,1997;9.[4],,#.[M].:,1998;6.[5].[M].:,1991;2.[6].[D].,2005;5.[7][S].(GB/T8051-2002).[8]MZhao,HFeng,JL.iSampleSizeofReboundMeth-odfortheDeterminationofConcreteStrength[R].ProceedingsofICCRRR,CapeTown,Nov,2005.#71###231